Michael M. Lynch, M.D., an orthopedic surgeon with Norwalk Hospital, will discuss technological advances in the management of knee pain and knee replacement on Wednesday, Oct. 26, at 6:30 p.m. in the Activity Center at the Riverbrook Regional YMCA, 404 Danbury Road. This is a free program. Lynch, who is in practice with Coastal Orthopedics, will discuss common causes of knee joint pain, as well as the latest treatments and prevention. His presentation will be followed by a question and answer session. Register: 1-866-NHB-WELL.